There's a closed pull request on the void-packages repository

Add udev-rules.d-dir trigger to reload udev rules
https://github.com/void-linux/void-packages/pull/23308

Description:
As discussed in #23307 and #23284, this adds a trigger which automatically runs `udevadm control --reload` when the udev rules change. This is basically a copy of the `hwdb.d-dir` trigger.